What causes a SPN 813 code?

SPN 813 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a SPN 813 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 813 active.

How do I fix SPN 813?

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

J1939 SPN

SPN 813

J1939 SPN 813 — Engine Management parameter

What it means

J1939 Network Error - Missing or Invalid Engine Management Parameter. This code generally indicates a communication failure where a specific node on the J1939 data link is unable to receive proper engine operating data.